<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script src="vue.js"></script>
  </head>
  <body>
    <div id="app">
        <input type="text" v-model="message">
        <p>{{message}}</p>
    </div>

    <script type="text/javascript">
      let str = 'abc';
      let app = new Vue({
        el: "#app",
        data: {
            message: str
        },
      });
    </script>
  </body>
</html>
